package com.example.demo;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet(name = "LogoutServlet", value = "/LogoutServlet")
public class LogoutServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 获取当前会话
        HttpSession session = request.getSession(false);

        // 如果会话存在，则销毁
        if (session != null) {
            session.invalidate();
        }

        // 重定向到登录页面
        response.sendRedirect("index.jsp");
    }
}
